作为埋设结构垫层材料的砂土混合物的实验室特性分析

IF 4.9 2区 工程技术 Q1 ENGINEERING, CIVIL
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引用次数: 0

摘要

垫层材料直接与地下结构和支撑相互作用,以承受外部荷载,如交通和覆土压力。因此,土与结构的相互作用对地下结构的稳定性和安全性起着至关重要的作用。特别是在地下管道方面,澳大利亚每 100 公里管道的年故障率约为 19%,维修费用高达数百万澳元。在这些年度故障中,重型交通和施工活动造成的地面振动是主要原因。为了减少地面振动对埋设结构的影响,本文介绍了砂-橡胶混合物作为垫层材料的应用可能性,其中橡胶来自回收的轮胎。实验研究包括粒度分布、标准proctor压实、渗透性测试、直接剪切测试、加州承载比和重复载荷测试,评估了砂-轮胎混合材料在减震潜力方面的性能。通过这些测试发现,混合了 20% 再生轮胎橡胶的沙子是最适合用作垫层材料的混合物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Laboratory characterisation of sand-tyre mix as bedding material for buried structures

Bedding material directly interacts with buried structures and supports to sustain external loadings such as traffic and overburden soil pressure. Therefore, soil-structure interaction plays an essential role in the stability and safety of buried structures. In particular focusing on underground pipelines, the annual rate of failures in Australia is around 19 % per 100 km of pipeline and can cost millions of Australian dollars in maintenance. Of these annual failures, ground vibrations from heavy traffic and construction activities are a major cause. In order to reduce such effects of ground vibrations on buried structures, this paper presents the possible application of sand-rubber mixes as a bedding material, where rubber is sourced from recycled tyres. The performance of sand-tyre mixes with regard to the potential for vibration reduction is assessed through this experimental study which comprises of particle size distribution, standard proctor compaction, permeability test, direct shear test, California Bearing Ratio and Repeated Load Test. From these tests, it was found that sand mixed with up to 20 % recycled tyre rubber was the most suitable mix for use as a bedding material.

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来源期刊
Transportation Geotechnics
Transportation Geotechnics Social Sciences-Transportation
CiteScore
8.10
自引率
11.30%
发文量
194
审稿时长
51 days
期刊介绍: Transportation Geotechnics is a journal dedicated to publishing high-quality, theoretical, and applied papers that cover all facets of geotechnics for transportation infrastructure such as roads, highways, railways, underground railways, airfields, and waterways. The journal places a special emphasis on case studies that present original work relevant to the sustainable construction of transportation infrastructure. The scope of topics it addresses includes the geotechnical properties of geomaterials for sustainable and rational design and construction, the behavior of compacted and stabilized geomaterials, the use of geosynthetics and reinforcement in constructed layers and interlayers, ground improvement and slope stability for transportation infrastructures, compaction technology and management, maintenance technology, the impact of climate, embankments for highways and high-speed trains, transition zones, dredging, underwater geotechnics for infrastructure purposes, and the modeling of multi-layered structures and supporting ground under dynamic and repeated loads.
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